The choice of acoustical receiver for deep investigating of biological tissues by pulsed optoacoustic (OA) method is described. Acoustical receiver is one of the fundamental parts of the device for AO diagnostics. This unit includes acoustical transducer and matched radio frequency amplifier. Received signals are stored and processed mathematically. Complexity of such processing is strongly dependent on acoustical receiver parameters. Acoustical receivers diffuser by used transducer type, registered signal frequency bandwidth, measurement resolution and sensitivity. All these factors determine quality of object tomographic image. The report includes both theoretical and experimental results demonstrating that application of resonant acoustical receivers with simplified transducers allows to improve inverse filtering procedure providing spatial resolution comparable with that for quasi-resonant transducers. This work was supported by RFBR.